Question 881676
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Hi
(1,0) and 
(3,-1)  m = 1/-2 = -1/2
***Using point-slope form, {{{y - y[1] = m(x - x[1])}}}P(4,0)
 y - 0 = (-1/2)(x - 4)
   y = (-1/2)x + 2
0r
    x + 2y = 4